🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.37

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.5 AU - 0.8 AU

Year: 333 Days

Day: 20.6 Hours

Environment

Temp: -133 °C

Axial Tilt: 33.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 465.9

Radius: 12.9

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.64 AU - 1.04 AU

Year: 489 Days

Day: 8.8 Hours

Environment

Temp: -146 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 64,308,415 km

• M1: 160,369 km (0.03 R)
• M2: 669,899 km (0.078 R)
• M3: 1,138,440 km (0.095 R)
• M4: 2,883,050 km (0.093 R)
• M5: 4,414,035 km (0.075 R)
• M6: 5,024,244 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 422.2

Radius: 9.8

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.44 AU - 2 AU

Year: 1434 Days

Day: 14.2 Hours

Environment

Temp: -182 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 64,308,415 km

• M1: 121,922 km (0.087 R)
• M2: 575,802 km (0.079 R)
• M3: 906,264 km (0.09 R)
• M4: 1,321,697 km (0.102 R)
• M5: 1,777,073 km (0.11 R)
• M6: 2,403,888 km (0.103 R)
• M7: 2,992,855 km (0.074 R)
• M8: 3,461,695 km (0.098 R)
• M9: 3,817,139 km (0.053 R)
• M10: 4,162,860 km (0.112 R)
• M11: 4,638,132 km (0.082 R)
• M12: 5,347,974 km (0.049 R)
• M13: 5,803,350 km (0.118 R)
• M14: 7,810,804 km (0.117 R)
• M15: 8,786,631 km (0.088 R)
• M16: 10,654,809 km (0.039 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 252.7

Radius: 9.1

Gravity: 3.05 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 3.18 AU - 4.54 AU

Year: 4822 Days

Day: 12.8 Hours

Environment

Temp: -206 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 64,308,415 km

• M1: 153,188 km (0.073 R)
• M2: 470,037 km (0.042 R)
• M3: 991,684 km (0.054 R)
• M4: 1,448,706 km (0.087 R)
• M5: 1,738,626 km (0.09 R)
• M6: 2,159,744 km (0.101 R)
• M7: 2,709,965 km (0.11 R)
• M8: 3,746,529 km (0.093 R)
• M9: 5,148,411 km (0.091 R)
• M10: 5,914,053 km (0.084 R)
• M11: 7,895,776 km (0.089 R)
• M12: 8,947,897 km (0.065 R)
• M13: 11,040,622 km (0.1 R)
• M14: 11,370,037 km (0.066 R)
• M15: 11,962,444 km (0.114 R)
• M16: 15,086,048 km (0.11 R)
• M17: 16,220,149 km (0.106 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 600.1

Radius: 5.9

Gravity: 17.24 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 4.8 AU - 7.38 AU

Year: 9556 Days

Day: 23.4 Hours

Environment

Temp: -227 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 64,308,415 km

• M1: 76,145 km (0.104 R)
• M2: 341,233 km (0.114 R)
• M3: 559,346 km (0.111 R)
• M4: 872,305 km (0.065 R)
• M5: 1,237,174 km (0.08 R)
• M6: 1,728,603 km (0.037 R)
• M7: 2,628,135 km (0.119 R)
• M8: 3,806,069 km (0.082 R)
• M9: 4,067,566 km (0.055 R)
• M10: 4,482,401 km (0.076 R)
• M11: 5,396,145 km (0.092 R)
• M12: 6,212,052 km (0.12 R)
• M13: 7,958,457 km (0.074 R)
• M14: 8,343,372 km (0.089 R)
• M15: 8,830,613 km (0.074 R)
• M16: 9,104,377 km (0.095 R)
• M17: 12,216,611 km (0.114 R)
• M18: 13,137,087 km (0.085 R)
• M19: 13,796,065 km (0.092 R)
• M20: 14,477,035 km (0.088 R)
• M21: 16,931,786 km (0.107 R)
• M22: 17,496,817 km (0.092 R)
• M23: 17,856,301 km (0.105 R)
• M24: 21,975,329 km (0.05 R)
• M25: 22,393,754 km (0.117 R)
• M26: 24,476,904 km (0.077 R)
• M27: 25,199,013 km (0.093 R)
• M28: 26,028,234 km (0.083 R)
• M29: 31,179,039 km (0.063 R)
• M30: 33,438,415 km (0.036 R)
• M31: 35,689,564 km (0.112 R)
• M32: 36,151,672 km (0.117 R)
• M33: 37,800,240 km (0.119 R)
• M34: 39,252,686 km (0.087 R)
• M35: 40,741,933 km (0.109 R)
• M36: 41,883,215 km (0.12 R)
• M37: 43,569,333 km (0.055 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 438.2

Radius: 5.1

Gravity: 16.85 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 6.04 AU - 8.42 AU

Year: 12361 Days

Day: 20.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 42.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 64,308,415 km

• M1: 67,469 km (0.039 R)
• M2: 250,726 km (0.077 R)
• M3: 449,242 km (0.114 R)
• M4: 898,335 km (0.094 R)
• M5: 1,358,947 km (0.091 R)
• M6: 1,534,126 km (0.117 R)
• M7: 2,100,205 km (0.084 R)
• M8: 3,557,886 km (0.119 R)
• M9: 4,334,897 km (0.093 R)
• M10: 4,597,591 km (0.073 R)
• M11: 5,058,802 km (0.075 R)
• M12: 5,965,963 km (0.102 R)
• M13: 6,590,085 km (0.037 R)
• M14: 7,095,876 km (0.064 R)
• M15: 8,814,905 km (0.059 R)
• M16: 9,820,053 km (0.077 R)
• M17: 13,783,200 km (0.111 R)
• M18: 14,479,578 km (0.045 R)
• M19: 17,066,125 km (0.081 R)
• M20: 17,427,853 km (0.064 R)
• M21: 19,470,163 km (0.093 R)
• M22: 21,414,935 km (0.026 R)
• M23: 23,932,967 km (0.116 R)
• M24: 24,204,187 km (0.093 R)
• M25: 27,030,390 km (0.094 R)
• M26: 27,720,186 km (0.113 R)
• M27: 28,827,659 km (0.12 R)
• M28: 29,755,465 km (0.115 R)
• M29: 30,703,018 km (0.071 R)
• M30: 33,327,862 km (0.071 R)
• M31: 33,666,253 km (0.039 R)
• M32: 39,899,547 km (0.113 R)
• M33: 40,793,245 km (0.116 R)
• M34: 44,094,122 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 11.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 289.7

Radius: 7.5

Gravity: 5.15 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 8.46 AU - 13.98 AU

Year: 23896 Days

Day: 19.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 64,308,415 km

• M1: 135,536 km (0.05 R)
• M2: 926,609 km (0.103 R)
• M3: 1,579,754 km (0.106 R)
• M4: 1,862,045 km (0.116 R)
• M5: 3,345,906 km (0.082 R)
• M6: 5,198,825 km (0.032 R)
• M7: 5,600,795 km (0.101 R)
• M8: 6,142,040 km (0.051 R)
• M9: 8,265,582 km (0.115 R)
• M10: 9,707,705 km (0.062 R)
• M11: 22,498,772 km (0.117 R)
• M12: 22,979,579 km (0.095 R)
• M13: 40,229,411 km (0.099 R)
• M14: 46,750,232 km (0.067 R)
• M15: 56,906,731 km (0.114 R)
• M16: 58,700,708 km (0.066 R)
• M17: 59,246,142 km (0.119 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 427 - 17,277 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit